package com.shopping.common;

import org.codehaus.jackson.annotate.JsonIgnore;
import org.codehaus.jackson.map.annotate.JsonSerialize;


import java.io.Serializable;

/**
 *2017.9.10下午9:10
 * Serializable 序列化接口
 * @param <T>
 */

@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
//保证序列化的json的时候，如果是null的对象，key也会消失
public class ServerResponse<T> implements Serializable{

    private  int status;
    private String msg;
    private T data;

    //构造器私有化
    private ServerResponse(int status) {
        this.status = status;
    }

    private ServerResponse(int status, T data) {
        this.status = status;
        this.data = data;
    }

    private ServerResponse(int status, String msg, T data) {
        this.status = status;
        this.msg = msg;
        this.data = data;
    }

    private ServerResponse(int status, String msg) {
        this.status = status;
        this.msg = msg;
    }
    @JsonIgnore
    //使之不在json序列化结构当中
    public boolean isSuccess(){
        return this.status==ResponseCode.SUCCESS.getCode(); //获取一个SUCCESS的状态码为0则，返回结构为true
    }

    public int getStatus() {
        return status;
    }
    public T getData() {
        return data;
    }
    public String getMsg() {
        return msg;
    }
    public static <T> ServerResponse<T> createBySuccess(){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode());
    }
    public static <T> ServerResponse<T> createBySuccessMessage(String msg){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),msg);
    }
    public static <T> ServerResponse<T> createBySuccess(T data){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),data);
    }
    public static <T> ServerResponse<T> createBySuccess(String msg,T data){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),msg,data);
    }
    //创建返回失败信息的构造器
    public static <T> ServerResponse<T> createByError(){
        return new ServerResponse<T>(ResponseCode.ERROR.getCode(),ResponseCode.ERROR.getDesc());
    }
    public static <T> ServerResponse<T> createByErrorMessage(String errorMessage){
        return new ServerResponse<T>(ResponseCode.ERROR.getCode(),errorMessage);
    }
    public static <T> ServerResponse<T> createByErrorCodeMessage(int errorCod,String errorMessage){

        return new ServerResponse<T>(errorCod,errorMessage);
    }

}
